In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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2
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1answer
546 views

Limit scp (with sshd on centos) speed / rate

I'd like to let users download / upload files via scp to my centos 6.0 system, it's connected to lan via Gigabit ethernet, but I don't want transfers to flow at that speed. I want to limit the speed ...
-2
votes
1answer
1k views

How do I calculate my bandwidth requirements?

We have a facility that needs to upload approximately 20 3MB photos per minute to Amazon S3. These are coming from 10 different machines on our local network. We need to do this continuously for 16 ...
3
votes
3answers
483 views

Does google's web crawler download binary files?

My Google-fu is failing me right now. I'm trying to figure out whether Google's web crawler downloads non-image binary files when it spiders sites. I know it downloads (and indexes) images and PDFs, ...
-1
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1answer
1k views

Stealing internet by changing MAC address? [closed]

OK - I have a static IP - and I have been on the same provider for years - its a wired network (a cable goes directly to my network card) - and the cable is connected to a switch on a pole in the ...
-3
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1answer
47 views

Bandwidth and RAM for our VDS [closed]

We are planning give an iframe from our server to the site which daily visitor 500k. What do you think about how much do we need system resource such as bandwidth and RAM. Thanks
0
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1answer
520 views

linode server bandwidth

I am ready to deploy my startup on the web so i would like to start small and get a VPS from linode as i see many good reviews and see how its going... the thing is that on their website they state: ...
-2
votes
1answer
678 views

Is it possible to get the most bandwidth on a shared network?

I have configured a simple LAN using Ubuntu router. We know that if we don't impose any restriction, total bandwidth of Internet will be distributed among LAN user. If any user try to get half of ...
-2
votes
3answers
800 views

Why does a wired network slow down with user increase?

If you had a wired network, 20 PCs hooked up to a 100 Mbit/sec switch (same onboard ethernet port speed) and you were just sending some test data round. What is the technical explanation as to why 20 ...
0
votes
1answer
186 views

Server hard disk read speed and client download speed, is there a connection? [closed]

Ok so a client's download speed is only as fast as a server's upload speed, and vice versa. Based on the answers to this post: Does upload speed depend upon download speed of the server? In other ...
1
vote
1answer
590 views

Gateway Modem loses ability to DNS lookup intermittently, often under heavy load

We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached). Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
2
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4answers
1k views

Amazon and bandwidth limits

This question may sound weird to some of you but I have never really used cloud and above all I'm still beginner in the web development and would be really thankful if someone could answer few of my ...
0
votes
1answer
164 views

monitoring multicast stream bandwidth

I have my own application(based on VLC Library). It's used to multicast a stream from server to client via the mmsh protocol. It streams 1 file from the server to 2 clients. How can I monitor the ...
0
votes
2answers
243 views

Server bandwidth usage monitoring

I'm using ubuntu 11.04. What I would like to be able to do, is to be able to view in a browser front end, the amount of in/out network data of the PROCESSES running on my machine. Anyone know if and ...
3
votes
1answer
99 views

Social Media event Bandwidth requirements

I have an one day event in July 2012, hosting 250 attendees for a social media event. We will be uploading live video to a website, allowing the press to access the web, and some vendors will be ...
0
votes
2answers
288 views

Monitoring _current_ bandwidth used by Apache

Afternoon gents, I'm trying to monitor and graph the currently used bandwidth by Apache, I've been trying to use mod_status with /server-status and just parsing this specific row: 16.1 requests/sec ...
4
votes
2answers
6k views

Speed up rsync by running multiple instances at once?

I have to transfer a big directory to another server. My problem is that i cannot use the full bandwidth that would be available, because one concurrent tcp stream does not get as fast. Basically ...
0
votes
1answer
244 views

How should I provision for a 30,000-listener Shoutcast stream? [closed]

My client wants to run a one-off live podcast on his blog, which is popular enough to land a couple million visits per month. Am I right in imagining that ShoutCast is the best way to handle that? ...
1
vote
3answers
192 views

Can a switch consume bandwidth?

I have a network with a router and a switch. At first my ISP's optical fiber is connected with media converter input port. Than Ethernet cable (output port of Media converter) is connected with the ...
1
vote
1answer
231 views

How to throttle bandwidth speed from VPS

I was wondering if you can throttle/boost the download speed from my VPS to me, because now and often I download a database which is quite big, typically 5-7GB. My side is quite slow (typically I have ...
3
votes
1answer
109 views

Do local cURL requests count towards my network transfer limit?

I have a purchased a hosting that allows me 10 GB of monthly transfer. Will this 10 GB of transfer be affected if I make some cURL requests, from-a-script-to-a-script on the same server (in this case ...
3
votes
2answers
292 views

CentOS 5.5 x86_64 VPS - A lot of inbound traffic when idle?

I have a CentOS VPS from UKWSD and I'm getting inbound traffic that I cannot understand. The VPS was setup yesterday and I installed vnstat this morning around 10am, since then the server was ...
1
vote
1answer
539 views

Server Hacked + Huge Bandwidth Usage Spike [duplicate]

Possible Duplicate: My server's been hacked EMERGENCY I run a couple of sites on Ubuntu via Rackspace Cloud Server. My site typically uses about 3 GB of outbound bandwidth a day. Today, ...
30
votes
5answers
1k views

Technologies that allow YouTube scale distribution?

Youtube as we know, is massive. It has thousand of concurrent users streaming at least 2 megabytes per video. Obviously, that gets to be a lot of traffic... far too much for any one server. What ...
2
votes
2answers
369 views

Linux (but not Windows) downloads take all our Internet bandwidth

At the company where I work, we have a perennial problem with large downloads (not P2P, not just updates) by Linux PCs (various Ubuntus) swamping our internet connection. For whatever reason, this is ...
1
vote
2answers
4k views

Tool to monitor bandwidth utilization per traffic (tc) class on linux

Some time in the past, i came across a siple tool that showed live in a 1sec interval, in human readable format, the bandwidth utilization seperated per tc class on your linux server. Unfortunately, i ...
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6answers
265 views

Bandwidth out of control, where to go next

I was wondering if someone could give me a bit of advice. I have just released a site live and it has maxed my bandwidth / space more than what i predicted. Im from Australia so space and bandwidth ...
5
votes
5answers
808 views

Measuring cumulative network statistics per user or per process

I've been googling for hours -- Under Linux I want to know the cumulative bytes sent and received by user or by process over all ip protocols. The best I've found in my searches is that it's possible ...
0
votes
2answers
827 views

How can I do bandwidth management using quotas on a Debian Linux based router?

I use a Debian Linux based PC as a router. Now, I want to implement bandwidth management using quotas. By that I mean when a user has reached their quota limit, their bandwidth will be reduced. I've ...
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votes
3answers
1k views

What could be causing Outrageous Bandwidth Spikes on a VPS(cpanel godaddy), 1200GB in one day?

I have a VPS hosted on Godaddy, managed with cpanel. I've averaged 30-50GB a month, but then it went up to 1200+GB in one day. It appears my server has been compromised. The thing is my website ...
-4
votes
1answer
67 views

What capacities should have a hosting to support an average of 1000 registered users simultaneously? [closed]

How much RAM, Disk Space, Bandwidth, etc would be needed? It's just and aproximate. I have no idea how to do a real implementation of a web service and I'm not going to, but I have to write a SRS ...
2
votes
5answers
315 views

How can I measure precisely the resources consumed by each Web site on my server?

We are having performance issues on our server which may or may not be the inevitable result of high traffic to our sites. We would like to optimize each site for performance so that we can be sure ...
0
votes
1answer
85 views

Inspecting http traffic

I'm running a CentOS 5 with plesk 10 and problems with slow website loading, now my provider tells me i'm excedding my bandwith. I've been monitoring the bandwith with iftop and it showed me some ...
5
votes
5answers
4k views

finding the best network latency between two countries

I know there are many tools to test for bandwidth and latency, but they all rely on having at least one host from which you can run those tests. I wonder whether there's an online source or some ...
1
vote
2answers
525 views

How to measure bandwidth within the last 15 minutes?

I would like to log my bandwidth into a database and find out when my windows server 2003 is being used the most. I want to feed the database with the bandwidth passed from the last feed (let's say ...
4
votes
1answer
700 views

Bandwith usage from pcap files

I've got a huge pcap file (many GBs) that I just can't load in wireshark. What I need is extracting bandwidth usage information, both total and per-protocol (in both incoming and outgoing direction), ...
5
votes
1answer
1k views

Command line speed test

There are several sites that give you decent speedtest metrics (DSLReports, Speakeasy; PhonePower even has additional VoIP-related metrics). I want to get these metrics on a periodic basis. Ideally, I ...
10
votes
2answers
1k views

How to find process which uses most bandwidth

How can I find the process which uses most bandwidth on a Linux PC? With iftop it's possible to find which connections produce most bandwidth, but how to find the process?
0
votes
1answer
442 views

Monitor network traffic over CentOS router

I have a CentOS 5.7 box configured as a router. Two network cards are attached to this machine, one connected to the Internet and one connected to an unmanaged network switch. The question is, how ...
1
vote
4answers
68 views

Loading after a minute

Here is the web site. http://reachourfans.com when i enter the site, it's loading nothing, and after a minute it's beginning loading the site. I've switched off the Update module, and installed it ...
3
votes
4answers
835 views

What tools should I use to assess bandwidth for web server farm..?

I'm contemplating moving datacentre and I need to know the size of pipe I'll need in order to get a quote. Currently I'm charged on GBs of traffic per month (currently about 42GB inbound - so ...
1
vote
1answer
231 views

Upload throttling in IIS 7

I've got a situation where multiple concurrent file uploads are being executed in a web application. These uploads are of massive files, among several users, and it's choking the system into terrible ...
0
votes
3answers
328 views

Server requirement for running an application having huge network traffic

What I am asking is a very common question that comes to any developer's mind when he/she wants to host a server but a precise answer is not easily available. I need to host a server which returns ...
1
vote
3answers
1k views

Configure a Linux router for fair bandwidth allocation without unnecessary limiting it

I run a Linux router (more precisely OpenWRT) on an internet connection with very limited bandwidth, around 1 MBit/s downstream and some dozen kBit/s upstream. There are several machines on the net ...
0
votes
1answer
298 views

When is directadmin user detail (especially bandwidth) updated? Possible to be online? [closed]

I hope it be the right place for asking about Directadmin, cpanel and other moderation web application. (I've deleted my question from pro webmaster site at http://webmasters.stackexchange.com and ...
2
votes
1answer
2k views

iperf-like bidirectional bandwidth measurement through NAT

I am using iperf to measure my uplink speed between my home PC behind NAT and a fully accessible root server. It does so using a TCP connection. For whatever reason it seems that iperf can only ...
1
vote
0answers
257 views

Bandwidth Consumption on VPN + SSL

I need to estimate how much bandwidth (in Kilobytes) I will consume doing a https request (with client ssl authentication) between two servers connected through VPN over Internet. There's no need to ...
1
vote
0answers
118 views

Getting bandwidth spent by user or by rails application on Ubuntu

I'm running multiple rails applications on AWS instance and I need to know how many bandwidth is each application using/wasting. Some of the applications are running with passenger over Apache2 some ...
2
votes
2answers
2k views

bandwidth monitoring issue on PfSense router

I have a PfSense router installed , where it has 4 interfaces. one of them is WAN and rest 3 are LAN networks, which have different subnets and IP address ranges. wan interface name = em0 lan ...
2
votes
1answer
203 views

What is the reason for variation in colocation pricing? [closed]

I have been doing a lot of research on colocation lately and have gained a lot of understanding in regards to how it all works and the different prices for various parts of colocation. Overall a lot ...
1
vote
3answers
5k views

Any freebsd/PfSense realtime bandwidth monitoring tool?

i need to know if there is any Tool (specifically for FreeBSD) , through which i can get the Realtime network traffic usage of any Host/IP , and which should also run on Multiple interfaces as well? i ...